Girls' Generation (Korean: 소녀시대, Hanja/Chinese/Japanese: 少女時代) is a nine-member South Korean girl group formed by S.M. Entertainment in 2007. The nine members are: Taeyeon (leader), Jessica, Sunny, Tiffany, Hyoyeon, Yuri, Sooyoung, Yoona and Seohyun. They are often referred to as SoShi (소시, Hanja: 少時), or SNSD; the first is an abbreviation and the second, mainly used outside Korea, is an acronym of the group's Korean name So Nyeo Shi Dae.